Concentrator.



W. P.'0GDEN.

CONCENTRATOR.

APPLIGATION FILED 00127, 1910.

1,071,456, Patented Aug. 26, 1913.

4 BHEETB-SHBET 1.

ZJ' maw coLumslA PLANUGRAPH C0..w^smNcToN. n. c.

W. P. OGDEN.

GONCENTRATOR.

APPLICATION FILED 00T. 7, 1910. 1,071,456. Patented Aug. 26, 1913.

4 SHEETS-SHEET 2.

nventor www QMMQQW A attorncgs wAsHlNu'roN,

W. P. OGDEN. GONCENTRATOR.

APPLIOATION FILED 00T. 7, 1910.

A* o osv j QQWWMVI W. P. OGDEN.

GONGENTRATOR.

APPLIoATIoN FILED 00T. 1. 1910.

1 ,O71 ,456. Patented Aug. 26, 1913.

UNITED STATES PATENT OFFICE..

WILLIAM P. OGDEN, OF DENVER, COLORADO.

CONCENTRATOR.

Application filed October 7,

'/'0 all /ar/Lom 'it may concern.'

lle it known that I, Nummer l). OonnN, a citir/.en of the United States, residing at llenver. in the count'v of Denver and State of tlolerado, have invented certain new and asetul improvements in Concentrators; and Yl do hereby declare the following to be a full, cl wir. and exact description of the invention. such as will enable others skilled in the art to which it appertains to make and use the same.

klv invention relates to ii'nprtwements in means for taking metallic values from placer material or ground ores bv concentration, in v object being bv improved construction and providing improved adjusting means, to permit the controlling and direct,- ing of the water and other materials in their movements upon or over the surface of the c( nccntrator.

further object is to provide a concentrating table with means for adjusting such arions portions of the same in such a manner as to tend to warp or twist the surface thereof into any variations found desirable in the treatment of the various ores or placer material and to so construct such tabl as to permit of such twisting or warpine' without damage to the table and without atiecting the smoothness of the surface of the table.

A further object is to provide a concentrating table constructed in parts or sections which mav be easily separated for transport ation or other purposes and easily joined together again.

further object is to provide an apparatus which shall be of simpleand economical construction and operation for the accomplishment of the aforesaid objects.

iVith these and other objects in view my inventien comprises certain novel features, constructions. combinatiens and arrangenientl ot parts, hereinafter described and claimed. an en'ibodiment of which is illustrated in the acconipanving drawings, in which- Figure 1 is a top plan view of the concentrator table, the method of nailing` together the slats forming the same being indicated in dotted lines in a portion of said ligure. Fig. f2 is a top plan view of the distributor. Fig. il is a plan view of the bodv portion of the table showing the genei'al direction of the ritlles. Fig. l is an end Specification of Letters Patent.

Patented Aue'. 26,1 913.

1910. Serial No. 585,862.

view, showing detail of the adjusting mechanism with section showing detail ot' center supporting bracket and adjacent parts. Fig. ela is a vertical section throug'h bracket 47 of Fig. 4. Fig. 5 shows in elevation the frame supporting the distributer. Fig. G shows one of the supports under the longitudinal center of the table. Fig. 7 is a vertical transverse section showing the arrangement of the slats composing the table proper, and the ritiles above the slats, with a detail on a larger scale. Fig. Ta shows a portion of the structure of Fig. 7, enlarged. Fig. 8 is a transverse section in detail showing means for holding` the slats tirmlv in proper relations to each other. Fig. t) is a view similar to Fig. S but showing a moditication of the construction shown in that ligure. Fig. 1() is a similar view showing a still further modification of the construction shown in Fig. 8. Fig. l1 is a similar view showing another moditication of the construction shown in Fig. tl.. Fig. 12 shows means for securing together the two longitudinal sections of the table. Fig. 123 shows detail of one of the brackets in which rest the heads ot' the bolts which support and adjust the table. Fig. l-l shows detail et one of the bi'ackets forming part of the adjusting mechanism. Fig. l5 is a side eleva.- tion of the table and shows the supporting means and adjusting mechanism.

'The samereference characters indicate the same parts in all views.

Referring to the drawings in detail`r let l indicate the table proper', composed ot slats Q4 ot' wood, or other suitable material` secured together by nails 25 arranged in a suitable manner as, for instance, in the manner shown in Fig. l. .ln cases where the table is to be transported by pack animals or there are other reasons making it desirable to separate the table into parts, the nails should be so arranged as not to cross some given longitudinal line of the table, preterablv the center line as clearly shown at Fig. 1. In this wav the table is divided, along said longitudinal line,y into sections 2 and 3 which sections are norniallv secured together by suitable means as bolts 4 passing through slats 5 and (3 forming the inner edges of sections '2 and 8 respectively. The heads and nuts of these bolts are disl/)csed in recesses 7 and 8 formed iii the aforesaid slats 5 and as clearly shown in Fig. l?.

ri`he bolts may of course pass through more than one slat of each section itl found desirs able tor giving more strength, though the bolts should not be so long as to interfere with the elasticity or flexibility ot the table.

A moditication ot the construction oit the table proper is shown in Fig. 8, in which longitudinal wires 2G are placed between the respective slats and form, in a` measure, a tongue and groove connection so that when the slats are brought into intimate contact by the nails or other securing devices, no verticall displacement is permitted to result t'rom the warping or twisting of the table hereinafter described. ln Fig. l0 angular strips 26 are shown in place of the round wires 2o, the purpose being the same. .t further modification of this construction is shown in Fig. 9 in which two longitudinally arranged wires or strips are located between the respective slats, these wires being indicated by the numerals 27 and 28; the nails in this case passing between the wires. The slats are not, however, brought into intimate Contact, the wires or strips being only partly embedded, thus leaving a slight space 2t) which will permit of sidewise expansion of the wood when saturated with moisture. YIn some Aases, it no sidewise expansion be allowed for in a suitable manner as here shown, the expansion will all be upward resulting in distorting the surface ot' the table. Fig. 11 shows a still further modification in which the slats are formed with a double tongue 27 and 28 and a double groove 27 and 28, which hold the slats tirmly in relation to each other but still allow for side eX- pansion the saine as the construction shown in Fig. 9.

At one end of the table any suitable distrilniting device as 9 is located, being supported by means of a frame work shown in Fig. 5 and consisting of uprights 1() and l1 connected near the bottom by a cross piece 12 and at the top by another cross piece 18. A diagonal brace 14 is located as shown and is provided at its upper' end with a slot l5 through which a bolt 1o is arranged to pass; uprights 1() and 11 being also slotted as shown for the purpose of eti'ecting a proper adjustment. The distributer E) is Yt'ormed with sides 17 and 18 and with a pivoted partition member 19 swinging upon a pivot 20 and providing means for regulating the spread ot the stream ot` water flowing onto the table trom the passageway 21` in relation to that ot' the pulp lowing onto the table trom channel 22. A screen 28 located as shown serves the usual purpose.

The table proper is supported on a traine work consisting of end members 30 and 31 connected by longitudinal side bars 232 and braced diagonal pieces 'l'he end members 30 and 31 include respectively crossbars 234 and to which are secured the adjusting devices for varying the inclination ot portions of the table.

The table proper is provided with the side members 36 and 37 to which are attachcd brackets 38 shown in detail in Fig. 14. These brackets consist ot base portions with two ears 39 and 40 projecting therefrom and provided with a smooth bore 4l for the accommodation of bolts 42 threaded at their upper portions and provided with angular portions 48 at their extreme ends in order that such bolts may be turned by the use of a key or wrench. Nuts 44, so set between the ears and against the base of the brackets as to prevent turning, engage the threaded portions of the bolts and the heads of such bolts are held in position by means of angular brackets 45 secured to cross-bars 34 and 35 respectively. The bore 41 in the ears 39 and 40 is larger than bolts 42 in order to allow for the play of the bolts. The table is pivotally mounted along its central longitudinal aXis by means of brackets 47 secured to cross pieces 48 as by bolts 48l indicated in Fig. (3 and eXtending downward into slots 49 formed in cross pieces 34 and 35 and secured to said cross pieces by bolts 50 as also shown in Fig. G. r[lhe lower portion of end section 31 is a framework composed of uprights 54, braces 51 and cross pieces 52 and 52a and all solidly joined together in suitable manner as indicated. Guide members 5451 are solidly joined to cross piece and extend downward between cross pieces 52 and 5 and just within uprights 54. Cross pieces and 52a and uprights 54 thus form a slot in which the framework formed by cross piece 35 and guide members 54a may be raised or lowered to the desired point. The raising and lowering is accomplished by threaded bolts 55 passing through brackets 5G and 57 mounted as shown. its the table proper is attached to cross piece 35 by the adjusting mechanism and by central brackets 47, the raising and lowering of cross piece 35 raises and lowers the foot of the table and thus the longitudinal slant of the table is adjusted.

The ritlles G0 are arranged at substantially the angle shown in Fig. 3 and the table is so adjusted that the side 36 is higher than the side 37 and there is also a longitudinal inclination at a suitable angle as shown for example in Fig. 15. Along the upper side 3G is a` channel 58 for receiving the concentrates which accumulate between the ritlles and pass forward between the ritlles to such channel and are thence discharged. The gangue, of course, discharges from the lower end of the table and the concentrates are drawn ott' through openings 59.

rlhe central brackets 47 are made approxh mately Y shaped, as shown in Fig. 4a, having a stem 47EL with a hole 47b therein through which bolt passes. The cross piece 48 rests in the opening of the Y the bottom of which is flattened and made on an inclination similar to the longitudinal inclination of the table proper. Bolts 48a pass through the arms of the Y and through cross piece 48 and hold the same therein. These bolts lit loosely enough in cross piece 48 so that said cross piece is permitted to slide upon the bolts. rhe stem 4Ta extends down into slot 49 and is mounted therein on bolt 50. The slot 49 is slightly wider than the thickness of stem 47a in order to allow for play of the stem when the longitudinal inclination of the table is changed and for similar reasons hole 47b has its edges well rounded as shown so as to allow play upon the bolt 50. The arms of the Y in the bracket at the lower end of the table are spaced apart wider than the width of cross piece 48 so as to allow play of said cross piece in the Y when the lower end of the table proper is raised or lowered. This is shown at Fig. 4a.

By means of a key or wrench applied to the top of bolts 4Q the saine may be turned in either direction. As the bolt Vis turned the nut 44, being threaded thereon and so set as to prevent turning, moves up or down on the bolt, according1 to the direction in which the bolt is turned. As the nut is fixed between the ears of the bracket and the bracket is attached to the table` that portion of the table adjacent the bracket must rise or lower with the nut. lt is apparent that any portion of the table proper to which such adjusting means are attached may be raised or lowered, in relation to any other portion, as desired. lt will be also apparent that as many of the frameworks and adjusting mechanisms, shown in Fig. 4, as may be de sired could be set at desired points along the table but in practice it is found that the construction shown, composed of the four adjusting mechanisms, one at each side at each end of the table, will answer all ordinary requirements. The table being normally pivoted at the center as shown at Fig. 4, the longitudinal center line is normally nearly stationary, having only the variation resulting from the tipping of the table en the axis. bolt 50, which is some distance below the longitudinal center line of the surface of the table.

It will be apparent that with the mechanism described the table may be kept in a plane if desired and given any desired longitudinal or transverse inclination, the longitudinal inclination being controlled by the adjusting bolts as already described and the transverse inclination being controlled by raising the nuts 44 on one side of the table and lowering those on the other side. It will also be apparent that either one or more or all of the corners (in the construction shown) may be forced down or up in relation to the center line, each being operated independently of the others so that the surface of the table may be warped or twisted into almost any shape desired. Even the bolt 50 may be rcnnwed from the bracket 47 to allow such twisting or warping as would tend to raise or lower the bracket beyond a point allowed b v the bolt when in place. The twisting action given to the floor of the table will cause the ritlles formed in the covering thereof to warp slightly giving a wave like effect, although this effect need not he and generally is not regular in character. lt is obvious that the effect described will be manifested both in the bottom of the grooves and the side falls thereof. lt will be understood that slats 24 ard nails Q5 are of such site, shape and inaterial as to allow such warping as may be found i'iccessary but it will also be borne in inind that very slight variations of inclination, warping, etc, will be sullicient to coinpletely change the action of such a thin sheet of water and such fine materials as are ordinarilyY moving upon the surface of a concentrating table so that the table can be made in a very substantial manner and still, by the improved construction herein described, allow plenty of elasticity or [lexibility for the desired warping or twisting without damage te the table.

The con'ibinations of metals and minerals in the ores and placer material to be treated by concentration methods are so varied and there are frequently so many different metals of different specitic gravities to be concentrated out of the same ore or placer material that it is ordinarily impossible to ascertain in advance just what kind or shape of concentrating surface would be the most effective in the treatment of a given ore or placer material. Control, to a considerable extent, of the velocity and direction of movement of the water and other materials upon the surface of the table, is required to accomplish the concentration of oven a single metal of a given specific gravity and to concentrate, at different points upon the same table,y different metals of sometimes only slightly different specific gravities, will clearly require a very exact adjustment of the table and as the requirements of each case vary widely, it would be impracticable to construct a table with any given surface to meet thc requirements of any given case. To meet these difliculties, my invention enables the operator to so adjust the surface as to be not only most effective in the conccntration of a single metal but also to so vary the adjustment at different points on the surface that a variety of metals of different specific gravities may be concentrated and run off into the trough at successive points of the table, each portion of the table being adjusted to meet the requirements of the concentration desired on that portion.

In the use of my elastic or flexible construction and adjusting mechanism, herein set forth, I do not wish to be limited to tables of any specific type as it is apparent that the same may be applied to a great variety of types of tables to advantage. It will also be apparent that many details of construction herein shown and described may be varied without in any manner departing from the spirit of my invention.

It will be understood that the ritlies (3() may be formed in any approved manner and of any approved material of suitable flexibility but preferably by covering the slats with rubber having corrugations of the kind as shown at Fig. 7, the corrugations constituting` the rillles.

IVhat I claim is:

1. In a concentrator, a supporting table formed of flexible slats, means for producing an irregular surface by l'nechanically warping portions of the table independently of other portions by twisting some of the slats around their longitudinal axes and a layer of material provided with a concentrating surface and yieldable to conform to the warping of the slats, said warping extending along the slats and toward the ends of the table.

In a concentrator, a supporting table formed of detachable sections, each section comprising slats of flexible material, means for producing transverse strain on certain of the slats and twisting them around their longitudinal axes, thereby mechanically varping portions ot' the table and a layer of material provided with a concentrating surfac y and yieldable to conform to the warping of the slats, said warping extending along the slats and toward the ends of the table.

3. In a concentrator, a supporting table formed of slats of flexible material, means for supporting the table approximately along its central longitudinal axis, means for twisting certain of the slats around their longitudinal axes and thereby mechanically warping portions of the table between its central axis and the outer edges, and a layer of material provided with a concentrating surface and yieldable to conform to the warping of the slats, said warping extending along the slats and toward the ends of' the table.

4. In a concentrator, a supporting table inclined transversely and formed of slats of flexible material, means for supporting the table approximately along its central longitudinal axis, means for warping the table by twisting transversely the slats forming portions of the table, between such axis and the outer edges, without disturbing the elevation of other portions of the table and a layer of material provided with a cencentrating surface and yieldable to conform to the warping of the slats, said warping extending along the slats and toward the ends of the table.

5. In a concentrator, a supporting table, inclined transversely and longitudinally and formed of slats of flexible material, means for supporting the table approximately along its central longitudinal axis, means for warping the table by twisting around their main axes, b v transverse strain, the slats of portions of the table between said supporting means and the outer edges of the table, without disturbing the elevation of other portions of the table and a layer of material provided with a concentrating surface and yieldable to conform to the warping of the slats, said warping extending along the slats and toward the ends of the table.

6. In a concentrator, a table inclined in two directions and formed of liexible slats, means for producing an irregular surface by mechanically warping portions of the table by twisting some of the slats around their longitudinal axes7 and a layer of material provided with a concentrating surface and yieldable to conform to the warping of the slats, said warping extending along the slats and toward the ends of the table.

In testimony whereof I affix my signature in presence of two witnesses.

VVILIIAhl I). OUDIN.

lVitnesses CABLE IVni'rEHEAn, ALBERT L. VOGL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

